User's Manual
C o n n e c t i v i t y f o r I n n o v a t i o n V1.3 Dateļ¼2022/01/06
HLMx83x,x93x,x85x,x95x
The testing should check for emissions that may occur due to the intermixing of emissions
with the other transmitters, digital circuitry, or due to physical properties of the host
product (enclosure). This investigation is especially important when integrating multiple
modular transmitters where the certification is based on testing each of them in a stand-
alone configuration. It is important to note that host product manufacturers should not
assume that because the modular transmitter is certified that they do not have any
responsibility for final product compliance.
If the investigation indicates a compliance concern the host product manufacturer is
obligated to mitigate the issue. Host products using a modular transmitter are subject to
all the applicable individual technical rules as well as to the general conditions of
operation in Sections 15.5, 15.15, and 15.29 to not cause interference. The operator of
the host product will be obligated to stop operating the device until the interference have
been corrected.
9. Additional testing, Part 15 Sub part B disclaimer
The final host / module combination need to be evaluated against the FCC Part 15B
criteria for unintentional radiators in orderto be properly authorized for operation as a Part
15 digital device.
The host integrator installing this module into their product must ensure that the final
composite product complies with the FCC requirements by a technical assessment or
evaluation to the FCC rules, including the transmitter operation and should refer to
guidance in KDB 996369. For host products with certified modular transmitter, the
frequency range of investigation of the composite system is specified by rule in Sections
15.33(a)(1) through (a)(3), or the range applicable to the digital device, as shown in
Section 15.33(b)(1), whichever is the higher frequency range of investigation When
testing the host product, all the transmitters must be operating. The transmitters can be
enabled by using publicly-available drivers and turned on, so the transmitters are active.
In certain conditions it might be appropriate to use a technology-specific call box (test set)
where accessory 50 devices or drivers are not available. When testing for emissions from
the unintentional radiator, the transmitter shall be placed in the receive mode or idle
mode, if possible. If receive mode only is not possible then, the radio shall be passive
(preferred) and/or active scanning. In these cases, this would need to enable activity on
the communication BUS (i.e., PCIe, SDIO, USB) to ensure the unintentional radiator
circuitry is enabled. Testing laboratories may need to add attenuation or filters depending
on the signal strength of any active beacons (if applicable) from the enabled radio(s). See
ANSI C63.4, ANSI C63.10 and ANSI C63.26 for further general testing details. The
product under test is set into a link/association with a partnering device, as per the normal
intended use of the product. To ease testing, the product under test is set to transmit at a
high duty cycle, such as by sending a file or streaming some media content.
15